Home / 21,177.82-31,726.63-14,136.60

Finding the Fourth Proportional to 21,177.82, 31,726.63 and 14,136.60

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Solution

The fourth proportional to 21,177.82, 31,726.63 and 14,136.60 is: 21,178.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.82 : 31,726.63 = 14,136.60 : x
  2. Step 2: Convert to fraction form
    21,177.82/31,726.63 = 14,136.60/x
  3. Step 3: Cross multiply
    21,177.82x = 31,726.63 × 14,136.60
  4. Step 4: Simplify right side
    21,177.82x = 448,506,642.32
  5. Step 5: Solve for x
    x = 448,506,642.32/21,177.82
  6. Step 6: Final answer
    x = 21,178.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.